package com.cyx.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.cyx.reggie.common.R;
import com.cyx.reggie.entity.Employee;
import com.cyx.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;

import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

/**
 * @author 陈彦西
 * @date 2024/7/3 上午10:16
 */
@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController{
    @Autowired
    private EmployeeService  employeeService;

    /**
     * 员工登陆
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee){
        /**
         * 1.将页面提交的密码password进行md5加密
         */
        String password= employee.getPassword();
        password= DigestUtils.md5DigestAsHex(password.getBytes());

        /**
         * 2.根据页面提交的用户名username查询数据库
         */
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername,employee.getUsername());
        Employee emp= employeeService.getOne(queryWrapper);

        /**
         * 3.如果没有查询到则返回登陆失败结果
         */
        if(emp==null){
            return R.error("登陆失败");
        }
        /**
         * 4，密码比对，如果不一致则返回登陆失败结果
         */
        if(!emp.getPassword().equals(password)){
            return R.error("登陆失败");
        }
        /**
         * 5.查看员工状态，如果为已禁用状态，则返回员工已禁用结果
         */
        if(emp.getStatus()==0){
            return R.error("账号已禁用");
        }
        /**
         * 6.登陆成功，将员工id存入Session并返回登陆成功结果
         */
        request.getSession().setAttribute("employee",emp.getId());
        return R.success(emp);
    }

    /**
     * 员工退出功能
     * @param request
     * @return
     */
    @PostMapping("logout")
    public R<String> logout(HttpServletRequest request){
        /**
         * 清理Session中保存的当前登陆员工的ID
         */
        request.getSession().removeAttribute("employee");
        return  R.success("退出成功");
    }

    /**
     * 新增员工
     * @param employee
     * @return
     */
    @PostMapping
    public  R<String>sava(HttpServletRequest request,@RequestBody Employee employee) {
        log.info("新增员工，员工信息：{}", employee.toString());
        /**
         * 设置初始密码123456，需要进行md5加密
         */
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());
        /**
         * 获得当前登陆用户的id
         */
         Long empId = ((Employee) request.getSession().getAttribute("employee")).getId();

        employee.setCreateUser(empId);
        employee.setUpdateUser(empId);

        employeeService.save(employee);
        return R.success("新增员工成功");

    }

    /**
     * 员工信息分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name ) {
        log.info("page={},pageSize={}，name={}", page, pageSize, name);
        /**
         * 构造分页查询构造器
         */
        Page pageInfo = new Page(page, pageSize);
        /**
         * 构造条件构造器条
         * 添加过滤条件
         * 添加排序
         */
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper();
        queryWrapper.like(StringUtils.isNotEmpty(name), Employee::getName, name);
        queryWrapper.orderByDesc(Employee::getUpdateTime);
        /**
         * 执行查询
         */
        employeeService.page(pageInfo, queryWrapper);
        return R.success(pageInfo);

    }

    /**
     * 根据id修改员工信息
     * 这个代码写起来是非常简单的，为什么简单是因为我们调用的函数都是mybatis已经封装好的
     * @param request
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(HttpServletRequest request,@RequestBody Employee employee) {
        log.info(employee.toString());

        Long empId = ((Employee)request.getSession().getAttribute("employee")).getId();
        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(empId);
        employeeService.updateById(employee);
        return R.success("员工信息修改成功");

    }

    /**
     * 根据id查询员工信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> get(@PathVariable Long id){
        log.info("根据id查询信息.......");
        Employee employee = employeeService.getById(id);
        if(employee!=null){
            return R.success(employee);
        }
        return null;
    }
}
